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\centerline{ MAT 141 PLACEMENT TEST $\qquad \qquad$ 9/13/02}

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NAME: 

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ID  number: 

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1. Let 
$$
f(x) = \cos{(x^3)} \qquad \qquad g(x)= (\cos{x})^3. 
$$
Is $f$ even, odd, or neither? Explain.

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Is $g$ even, odd or neither? Explain.



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2. Solve for $x$.
$$
log_5 x = log_{25} 18 - log_{25} 2.
$$


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